Pilot's Guide

190-00663-02 Rev. B

Garmin G1000 Pilot’s Guide for the Hawker Beechcraft C90A/GT/GTi

SYSTEM OVERVIEW

Figure 1-21 MFD Softkeys

DCLTR-1

DCLTR-2

DCLTR

DCLTR-3

AIRWY ON

AIRWY LO

AIRWAYS

AIRWY HI

The DONE Softkey label changes to UNDO

when the checklist item is already checked.

Press the BACK softkey to

return to the top-level softkeys.

CHKLIST

MAP

DCLTR SHW CHRT

BACKMETARXM LTNGNEXRADSTRMSCPAIRWAYSTERRAINPROFILE TOPOTRAFFIC

EXIT EMERGCYDONE

(optional) (optional)

(optional)

LEGEND

(optional)(optional) (optional)

GPS RECEIVER OPERATION

Each GIA 63W Integrated Avionics Unit (IAU) contains a GPS receiver. Information collected by the speciﬁed

receiver (GPS1 for the #1 IAU or GPS2 for the #2 IAU) may be viewed on the AUX - GPS Status Page.

GPS1 provides information to the pilot-side PFD and GPS2 provides data to the copilot-side PFD. Internal

system checking is performed to ensure both GPS receivers are providing accurate data to the PFDs. In some

circumstances, both GPS receivers may be providing accurate data, but one receiver may be providing a better

GPS solution than the other receiver. In this case the GPS receiver producing the better solution is automatically

coupled to both PFDs. “BOTH ON GPS 1” or “BOTH ON GPS 2” is displayed in the Reversionary Sensor

Window (see Appendix A) indicating which GPS receiver is being used. Both GPS receivers are still functioning

properly, but one receiver is performing better than the other at that particular time.

These GPS sensor annunciations are most often seen after system power-up when one GPS receiver has

acquired satellites before the other, or one of the GPS receivers has not yet acquired an SBAS signal. While

the aircraft is on the ground, the SBAS signal may be blocked by obstructions causing one GPS receiver to

have difﬁculty acquiring a good signal. Also, while airborne, turning the aircraft may result in one of the GPS

receivers temporarily losing the SBAS signal.